FEATURES
s
LT1001
Precision Operational
Amplifier
DESCRIPTION
The LT
®
1001 significantly advances the state-of-the-
art of precision operational amplifiers. In the design,
processing, and testing of the device, particular atten-
tion has been paid to the optimization of the entire
distribution of several key parameters. Consequently,
the specifications of the lowest cost, commercial tem-
perature device, the LT1001C, have been dramatically
improved when compared to equivalent grades of com-
peting precision amplifiers.
Essentially, the input offset voltage of all units is less
than 50µV (see distribution plot below). This allows the
LT1001AM/883 to be specified at 15µV. Input bias and
offset currents, common-mode and power supply re-
jection of the LT1001C offer guaranteed performance
which were previously attainable only with expensive,
selected grades of other devices. Power dissipation is
nearly halved compared to the most popular precision
op amps, without adversely affecting noise or speed
performance. A beneficial by-product of lower dissipa-
tion is decreased warm-up drift. Output drive capability
of the LT1001 is also enhanced with voltage gain
guaranteed at 10 mA of load current. For similar perfor-
mance in a dual precision op amp, with guaranteed
matching specifications, see the LT1002. Shown below
is a platinum resistance thermometer application.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
s
s
s
s
s
Guaranteed
Low Offset Voltage
LT1001AM
15µV max
LT1001C
60µV max
Guaranteed
Low Drift
LT1001AM
0.6µV/°C max
LT1001C
1.0µV/°C max
Guaranteed
Low Bias Current
LT1001AM
2nA max
LT1001C
4nA max
Guaranteed
CMRR
LT1001AM
114dB min
LT1001C
110dB min
Guaranteed
PSRR
LT1001AM
110dB min
LT1001C
106dB min
Low Power Dissipation
LT1001AM
75mW max
LT1001C
80mW max
Low Noise 0.3µV
P-P
APPLICATIONS
s
s
s
s
Thermocouple amplifiers
Strain gauge amplifiers
Low level signal processing
High accuracy data acquisition
Linearized Platinum Resistance Thermometer
with
±0.025°C
Accuracy Over 0 to 100°C
+15
R plat.
†
1kΩ = 0°C
1MEG.**
330k*
20k
1.2k**
10k*
GAIN
TRIM
–
LT1001
6
10k*
3
2
1
µf
NUMBER OF UNITS
2
–
LT1001
6
200Ω
LINEARITY
TRIM
OUTPUT
0 TO 10V =
0 TO 100°C
3
+
+
LM129
90k*
20k
OFFSET TRIM
10k*
0
–60
–40
0
20
40
60
–20
INPUT OFFSET VOLTAGE (MICROVOLTS)
1001 TA02
* ULTRONIX 105A WIREWOUND
** 1% FILM
†
PLATINUM RTD
118MF (ROSEMOUNT, INC.)
‡ Trim sequence: trim offset (0
°C
= 1000.0Ω),
trim linearity (35
°C
= 1138.7Ω), trim gain
(100
°C
= 1392.6Ω). Repeat until all three
points are fixed with
±0.025°C.
1001 TA01
U
U
Typical Distribution
of Offset Voltage
V
S
=
±15V,
T
A
= 25°C
200
954 UNITS
FROM THREE RUNS
150
100
50
1
LT1001
ABSOLUTE
MAXIMUM
RATINGS
Supply Voltage ......................................................
±22V
Differential Input Voltage ......................................
±30V
Input Voltage ........................................................
±22V
Output Short Circuit Duration ......................... Indefinite
Operating Temperature Range
LT1001AM/LT1001M ....................... – 55°C to 150°C
LT1001AC/LT1001C .............................. 0°C to 125°C
Storage: All Devices.......................... – 65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
OFFSET ADJUST
8
1
–IN 2
3
+IN
4
V– (CASE)
H PACKAGE
METAL CAN
–
+
5
NC
7
V+
6 OUT
ORDER PART NUMBER
LT1001AMH/883
LT1001MH
LT1001ACH
LT1001CH
TOP VIEW
V
OS
TRIM 1
–IN 2
+IN 3
V– 4
–
+
V
OS
8 TRIM
7 V+
6 OUT
5 NC
J8 PACKAGE
N8 PACKAGE
8 PIN HERMETIC DIP 8 PIN PLASTIC DIP
S8 PACKAGE
8 PIN PLASTIC SO
LT1001AMJ8/883
LT1001MJ8
LT1001ACJ8
LT1001CJ8
LT1001ACN8
LT1001CN8
LT1001CS8
S8 PART MARKING
1001
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
∆V
OS
∆Time
I
OS
I
b
e
n
e
n
A
VOL
CMRR
PSRR
R
in
V
OUT
S
R
GBW
P
d
Input Offset Voltage
Long Term Input Offset Voltage
Stability
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Voltage Density
Large Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Resistance Differential Mode
Input Voltage Range
Maximum Output Voltage Swing
Slew Rate
Gain-Bandwidth Product
Power Dissipation
R
L
≥
2kΩ
R
L
≥
1kΩ
V
S
=
±15V,
T
A
= 25°C, unless otherwise noted
LT1001AM/883
LT1001AC
MIN TYP
MAX
7
15
10
0.2
0.3
±0.5
25
1.0
2.0
±2.0
0.6
18.0
11.0
400
250
110
106
15
±13
±13
±12
0.1
0.4
75
6
LT1001M/LT1001C
MIN
TYP
MAX
18
60
CONDITIONS
LT1001AM/883
Note 1
LT1001AC
Notes 2 and 3
UNITS
µV
µV/month
nA
nA
µV
p-p
nV√Hz
V/mV
dB
dB
MΩ
V
V
V
V/µs
MHz
0.3
0.4
±0.7
0.3
10.5
9.8
800
500
126
123
80
±14
±14
±13.5
0.25
0.8
48
4
1.5
3.8
±4.0
0.6
18.0
11.0
0.1Hz to 10Hz (Note 2)
f
O
= 10Hz (Note 5)
f
O
= 1000Hz (Note 2)
R
L
≥
2kΩ, V
O
=
±12V
R
L
≥
1kΩ V
O
=
±10V
V
CM
=
±13V
V
S
=
±3V
to
±18V
450
300
114
110
30
±13
±13
±12
0.1
0.4
0.3
10.3
9.6
800
500
126
123
100
±14
±14
±13.5
0.25
0.8
46
4
R
L
≥
2kΩ (Note 4)
(Note 4)
No load
No load, V
S
=
±3V
80
8
See Notes on page 3.
2
U
W
U
U
W W
W
mW
LT1001
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
Input Offset Voltage
∆V
OS
∆Temp
I
OS
I
B
A
VOL
CMRR
PSRR
V
OUT
P
d
Average Offset Voltage Drift
Input Offset Current
Input Bias Current
Large Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Voltage Range
Output Voltage Swing
Power Dissipation
R
L
≥
2kΩ
No load
CONDITIONS
V
S
=
±15V,
– 55°C
≤
T
A
≤
125°C, unless otherwise noted
LT1001AM/883
MIN TYP
MAX
30
60
0.2
0.8
±1.0
300
110
104
±13
700
122
117
±14
55
90
0.6
4.0
±4.0
200
106
100
±13
±12.0
LT1001M
MIN
TYP
MAX
45
160
0.3
1.2
±1.5
700
120
117
±14
±13.5
60
100
1.0
7.6
±8.0
UNITS
µV
µV/°C
nA
nA
V/mV
dB
dB
V
V
mW
q
q
q
q
R
L
≥
2kΩ, V
O
=
±10V
V
CM
=
±13V
V
S
=
±3
to
±18V
q
q
q
q
q
q
±12.5 ±13.5
V
S
=
±15V,
0°C
≤
T
A
≤
70°C, unless otherwise noted
SYMBOL PARAMETER
V
OS
Input Offset Voltage
∆V
OS
∆Temp
I
OS
I
B
A
VOL
CMRR
PSRR
V
OUT
P
d
Average Offset Voltage Drift
Input Offset Current
Input Bias Current
Large Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Voltage Range
Output Voltage Swing
Power Dissipation
R
L
≥
2kΩ
No load
R
L
≥
2kΩ, V
O
=
±10V
V
CM
=
±13V
V
S
=
±3V
to
±18V
CONDITIONS
q
q
q
q
q
q
q
q
q
q
MIN
LT1001AC
TYP
MAX
20
60
0.2
0.5
±0.7
0.6
3.5
±3.5
MIN
LT1001C
TYP
MAX
30
110
0.3
0.6
±1.0
1.0
5.3
±5.5
UNITS
µV
µV/°C
nA
nA
V/mV
dB
dB
V
V
350
110
106
±13
750
124
120
±14
50
85
250
106
103
±13
±12.5
750
123
120
±14
±13.8
55
90
±12.5 ±13.8
mW
The
q
denotes the specifications which apply over the full operating
temperature range.
Note 1:
Offset voltage for the LT1001AM/883 and LT1001AC are measured
after power is applied and the device is fully warmed up. All other grades
are measured with high speed test equipment, approximately 1 second
after power is applied. The LT1001AM/883 receives 168 hr. burn-in at
125°C. or equivalent.
Note 2:
This parameter is tested on a sample basis only.
Note 3:
Long Term Input Offset Voltage Stability refers to the averaged
trend line of V
OS
versus Time over extended periods after the first 30 days
of operation. Excluding the initial hour of operation, changes in V
OS
during
the first 30 days are typically 2.5µV.
Note 4:
Parameter is guaranteed by design.
Note 5:
10Hz noise voltage density is sample tested on every lot. Devices
100% tested at 10Hz are available on request.
3
LT1001
TYPICAL PERFORMANCE CHARACTERISTICS
Typical Distribution of Offset
Voltage Drift with Temperature
100
265 UNITS
TESTED
50
40
30
V
S
=
±15V
LT1001
CHANGE IN OFFSET VOLTAGE (MICROVOLTS)
80
OFFSET VOLTAGE (µV)
NUMBER OF UNITS
60
40
20
–1.0
–0.6 –0.2 0 +0.2 +0.6 +1.0
OFFSET VOLTAGE DRIFT (µV/°C)
1001 G01
0.1Hz to 10Hz Noise
100
OFFSET VOLTAGE CHANGE (µV)
NOISE VOLTAGE 100nV/DIV
VOLTAGE NOISE nV/√Hz
30
1/f CORNER
4Hz
VOLTAGE
3
CURRENT NOISE pA/√Hz
0
2
6
4
TIME (SECONDS)
Input Bias and Offset Current
vs Temperature
1.4
INPUT BIAS AND OFFSET CURRENTS (nA)
1.0
0.8
0.6
BIAS CURRENT
0.4
0.2
INPUT BIAS CURRENT (nA)
V
S
=
±15V
V
CM
0.5
0
–.5
INVERTING OR NON-INVERTING
INPUT BIAS CURRENT (mA)
1.2
OFFSET CURRENT
50
25
75
0
TEMPERATURE (°C)
100
125
–1.5
–15
–50 –25
4
U W
8
1001 G04
1001 G07
Offset Voltage Drift withTemperature
of Representative Units
Warm-Up Drift
4
V
S
=
±15V
T
A
= 25°C
20
10
0
–10
–20
–30
–40
–50
–50
–25
50
25
0
75
TEMPERATURE (°C)
LT1001A
LT1001A
3
METAL CAN (H) PACKAGE
2
DUAL-IN-LINE PACKAGE
PLASTIC (N) OR CERDIP (J)
LT1001
1
100
125
0
1
3
4
2
TIME AFTER POWER ON (MINUTES)
5
1001 G02
1001 G03
Noise Spectrum
10
T
A
= 25°C
V
S
=
±3
TO
±18V
Long Term Stability of Four
Representative Units
10
5
10
1.0
0
3
1/f CORNER
70Hz
CURRENT
0.3
–5
1
10
1
10
100
FREQUENCY (Hz)
0.1
1000
1001 G05
–10
0
1
3
2
TIME (MONTHS)
4
5
1001 G06
Input Bias Current
Over the Common Mode Range
1.5
1.0
I
b
Input Bias Current vs
Differential Input Voltage
30
V
S
=
±15V
T
A
= 25°C
–
+
DEVICE WITH POSITIVE INPUT CURRENT
V
S
=
±15V
T
A
= 25°C
20
10
DEVICE WITH NEGATIVE INPUT CURRENT
–1.0
COMMON-MODE
INPUT RESISTANCE = 28V = 280G
Ω
0.1nA
10
–5
0
5
–10
COMMON-MODE INPUT VOLTAGE
15
I
B
≈
1 nA to V
DIFF
= 0.7V
0
0.1
0.3
1.0
3.0
10
±
DIFFERENTIAL INPUT (VOLTS)
30
1001 G09
1001 G08
LT1001
TYPICAL PERFORMANCE CHARACTERISTICS
Open Loop Voltage Gain
vs Temperature
140
OPEN LOOP VOLTAGE GAIN (V/V)
OPEN LOOP VOLTAGE GAIN (dB)
1200k
1000k
800k
600k
400k
200k
0
–50 –25
V
S
=
±15V,
V
O
=
±12V
V
S
=
±3V,
V
O
=
±1V
80
60
40
20
0
VOLTAGE GAIN (dB)
100
V
S
=
±15V
12
8
4
0
–4
GAIN 125°C
GAIN 25°C & –55°C
V
S
=
±15V
PHASE MARGIN –55°C = 63°
125°C = 57°
0.2
1
0.5
FREQUENCY (MHz)
2
1001 G12
120
25°C
PHASE
MARGIN
= 60°
140
160
180
200
220
V
S
=
±3V
50
25
75
0
TEMPERATURE (°C)
100
125
–20
0.1
1
10
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1001 G11
–8
0.1
1001 G10
Common Mode Limit
vs Temperature
V
+
–0.2
–0.4
–0.6
–0.8
–1.0
140
COMMON MODE REJECTION (dB)
Common Mode Rejection Ratio
vs Frequency
140
Power Supply Rejection Ratio
vs Frequency
POWER SUPPLY REJECTION (dB)
120
100
80
60
40
20
0
0.1
POSITIVE SUPPLY
NEGATIVE SUPPLY
V
S
=
±15V ±1V
p-p
T
A
= 25°C
COMMON MODE LIMIT (VOLTS)
REFERRED TO POWER SUPPLY
V
+
= 1.2 to 4V
V
+
= 12 to 18V
120
100
80
60
40
20
+1.0
+0.8
+0.6
+0.4
+0.2
V
–
–50 –25
V
–
= –12 to –18V
V
–
= –1.2 to –4V
V
S
=
±15V
T
A
= 25°C
0
50
25
75
TEMPERATURE
°C
100
125
1
10
100
1k
10k
FREQUENCY (Hz)
100k
1M
1
10
100
1k
FREQUENCY (Hz)
10k
100k
1001 G13
1001 G14
1001 G15
Supply Current vs Supply Voltage
16
Output Swing vs Load Resistance
50
SHORT CIRCUIT CURRENT (mA)
SINKING
SOURCING
Output Short-Circuit Current
vs Time
40
30
20
10
–10
–20
–30
–40
–50
0
1
3
4
2
TIME FROM OPUTPUT SHORT (MINUTES)
1001 G18
–55°C
25°C
125°C
V
S
=
±15V
125°C
25°C
–55°C
OUTPUT SWING (VOLTS)
2.0
SUPPLY CURRENT (mA)
NEGATIVE SWING
25°C
–55°C
1.5
125°C
1.0
12
8
POSITIVE SWING
4
V
S
=
±15V
T
A
= 25°C
0.5
±
3
±
6
±
9
±
12
±
15
±
18
±
21
SUPPLY VOLTAGE (V)
1001 G16
0
100
1000
3k
300
LOAD RESISTANCE (Ω)
10k
1001 G17
5
PHASE SHIFT (DEGREES)
U W
Open Loop Voltage Gain
Frequency Response
20
T
A
= 25°C
16
120
Gain, Phase Shift vs Frequency
80
PHASE 25°C
100
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